Proxy pattern

tom2cjp

于 2009-12-24 00:21:01 发布

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文章标签： Java

本文链接：https://blog.youkuaiyun.com/tom2cjp/article/details/83521023

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class Place
  def rent
    puts "oh, don't call me"
  end
end

class House < Place
  def rent
    puts "make rent"
  end
end

class HouseAgency < Place
  attr :real_place

  def rent
    puts "rise 100% in price"
    @real_place ||= House.new
    @real_place.rent
  end
end

# console
house_agency = HouseAgency.new
house_agency.rent